Preparation method of composite zymoprotein

Abstract

The invention relates to a method for preparing a complex enzyme protein, which is characterized by comprising the following steps: preparing an aerobic fermentation medium, preparing an anaerobic fermentation medium, sterilizing the mediums, activating bacterial strains, performing amplification cultivation and inoculation, preparing an aerobic fermentation condition, preparing an anaerobic fermentation condition, drying at a low temperature, mixing the mixture, and packaging. The method has the advantages that: 1, the strains are excellent and the passage stability is strong; 2, each strain plays a synergetic role in the process of fermentation, the growth and the metabolism of each strain is thriving, and the enzyme productivity is strong; 3, aerobic zymogens and anaerobic zymogens perform fermentations separately so that each strain gives play to the best enzyme producing performance; and 4, proteins which are difficult to absorb by animals in raw materials are converted into thalli single cell proteins which are easy to absorb so that the nutritive value of products is improved.

Description

technical field [0001] The invention relates to a method for preparing an enzyme protein, in particular to a method for preparing a complex enzyme protein. Background technique [0002] The idea and practice of adding "enzyme" to feed to improve the nutritional value of feed and the production performance of livestock and poultry has a history of decades. As early as the 1950s, Jensen et al. (1957) and Fry et al. (1958) reported that the addition of crude amylase and protease could significantly increase the growth rate and feed conversion rate of chickens. In the early days, amylase was obtained from barley malt, and later pepsin and trypsin from animal sources were used; papain (papain) from plant sources; phytase was produced from Aspergillus, but in a long historical period, due to production Due to problems such as high cost, low activity, and poor stability, it has not been able to enter the practical stage. Around the 1990s, due to the rapid development of bioengine...

AI Technical Summary

Problems solved by technology

In the early days, amylase was obtained from barley malt, and later pepsin and trypsin from animal sources were used; papain (papain) from plant sources; phytase was produced from Aspergillus, but in a long historical period, due to production Due to problems such as high cost, low activity, and poor stability, it has not been able to enter the practical stage.